DAPI fluorescence from both the ALP-treated sections and also the polyP-poor signal measured in murine brain cells showed a negligible contribution above 580 nm.
First, we acquired the emission spectra for DAPI-DNA using murine brain cells as a DAPI-DNA baseline that did not contain appreciable levels of polyPs.
To determine whether these biological properties of N3-2A, descrined in cancer cell lines over-expressing APP, are conserved when using brain cells expressing endogenous APP, we tested if N3-2A-F binds endogenous APP from freshly isolated murine brain cells.
RVG29 functionalized liposomes (RVG29-lip) showed significantly higher uptake efficiency in murine brain endothelial cells and dopaminergic cells, and high penetration efficiency across the blood brain barrier (BBB) in vitro.
Wnt ligation to its membrane receptors, Frizzled4 (Fz4) and LRP5/6 expressed by brain endothelial cells, inhibits the β-catenin repressor complex, allowing β-catenin cytoplasmic accumulation, nuclear translocation and transcription of various genes, including claudin-3 in cultured murine brain endothelial cells [ 96, 99].
Immunoblotting analysis of endostatin treated murine brain endothelial cells revealed that endostatin induces activation of phosphatases or other regulatory signalling proteins, which may interfere with FGF effects on endothelial cells; nevertheless, this occurs only if endostatin binds to the endothelial cell surface via heparan-sulfate proteoglycans [ 44, 45].
The bands detected corresponded to the molecular weights of the catalytic subunits of PP1 and PP2A with covalently bound MC-LR and were comparable to those for mice and murine whole brain cells reported previously by Lu et al. (2008) and Feurstein et al. (2009).
The murine brain endothelial cell line bEnd.3 (ATCC, Manassas, VA, USA) cells were maintained in Dulbecco's modified Eagle's medium (DMEM; Thermo Fisher Scientific Inc., Waltham, MA, USA) that was supplemented with 10% fetal bovine serum (Thermo Fisher Scientific Inc ., 100 U/ml penicillin, and 100 μg/ml streptomycin (Sigma-Aldrich Co., LLC) at 37°C in a humidified 5% CO2 incubator.
We found that AAV-GMN, but not AAV2, readily transduces the murine brain endothelial cell line bEnd.3, a result that mirrors previously observed in vivo transduction profiles of brain vasculature.
RNA isolated from murine brain endothelial cell line (bEnd.3) was used a positive control.
We used a murine brain endothelial cell line bEnd.3 (bEnd.3, American Type Culture Collection, Manassas, Virginia, USA) for coculture experiments as described previously [15].
